Value of colonoscopy for prediction of prognosis in patients with ulcerative colitis

Figure 1 A case of inactive UC. A discrepancy is seen between an endoscopic and a histologic finding. A: A routine colonoscopy finding. It shows an almost normal mucosal appearance; B: A histologic finding. It shows an intense infiltration of mononuclear cells and neutrophils.

Figure 2 Grading of pit structures in the colorectal mucosa of patients with inactive UC. A: MCS grade 1, pits small, round, and regularly arranged; B: MCS grade 2, pits rather large, oval, and somewhat irregular in arrangement; C: MCS grade 3, pits of various shapes and sizes, and irregularly arranged.

Figure 3 Correlation between grading of pit structures and histological findings (P < 0. 001, Spearman’s rank test). The number of colored ring indicates the number of the patients performed magnifying colonoscopy (n = 112).

Figure 4 Kaplan-Meier survival analysis showing the cumulative proportion of patients who had a relapse according to MCS grade group.